Bullet: 375 gr XPB  (Barnes)

Diameter: 0.500"

 

Powder: Lil'Gun (Hodgdon)

Starting Powder: 31.0 gr

Max Powder: 34.0 gr

 

Primer: FED 210m

 

Case: Starline Brass

Trim Length: 1.615"

 

Cartridge Overall Length: 2.290"

 

Starting Velocity: 1,605

Starting Pressure:  

Max Velocity: 1,738

Max Pressure:  

 

*Roll crimp the case mouth into the cannelure. *Brass for this cartridge has been made with both Large Pistol and Large Rifle primer pockets. Our data was developed using Large Rifle primers. The primer pockets for Large Rifle primers are the same diameter, but slightly deeper than the primer pockets designed for Large Pistol primers. Cases with the shallower primer pocket can be reamed deeper to accept Large Rifle primers.
Barrel: 10" with 1:15" twist.

 

Source: https://www.barnesbullets.com/wp-content/uploads/2021/05/500SW.pdf